CVE-2018-17553 : Security Advisory and Response
Learn about CVE-2018-17553, a critical vulnerability in Naviwebs Navigate CMS 2.8 that allows authenticated attackers to execute remote code. Find out how to mitigate this security risk.
Naviwebs Navigate CMS 2.8 is vulnerable to an "Unrestricted Upload of File with Dangerous Type" issue combined with directory traversal, allowing authenticated attackers to execute remote code.
Understanding CVE-2018-17553
What is CVE-2018-17553?
The vulnerability in the navigate_upload.php file of Naviwebs Navigate CMS 2.8 enables attackers to execute code remotely by sending a specific POST request.
The Impact of CVE-2018-17553
This vulnerability can be exploited by authenticated attackers to achieve remote code execution, posing a significant security risk to the affected systems.
Technical Details of CVE-2018-17553
Vulnerability Description
The flaw in Naviwebs Navigate CMS 2.8 allows for an unrestricted upload of files with dangerous types, coupled with directory traversal, leading to remote code execution.
Affected Systems and Versions
- Product: Naviwebs Navigate CMS 2.8
- Vendor: N/A
- Version: N/A
Exploitation Mechanism
Attackers can exploit this vulnerability by sending a POST request with specific parameters, engine=picnik and id=../../../navigate_info.php.
Mitigation and Prevention
Immediate Steps to Take
- Apply the patch provided by the vendor to address the vulnerability.
- Monitor for any unusual activities on the system.
Long-Term Security Practices
- Regularly update and patch all software to prevent known vulnerabilities.
- Implement proper access controls and authentication mechanisms.
Patching and Updates
Ensure that the Naviwebs Navigate CMS is updated to the latest secure version to mitigate the risk of exploitation.